problem started with a message "battery needs to be replaced". i took the battery out and it ran with the power source plugged in and it ran fine. purchased new 12 cell batter (EV12), the old one is EV06, 6 cell battery.
loaded 12 cell battery and the pavilion notebook laptop froze up with black screen and message "problem with battery, press ctrl, altn, del". when i did this it immediately cycles back to this same error message.
i just took the laptop to BestBuy and their tech did the same thing and the same problem appeared. she said the problem was not the battery but it was a bad hard drive and it would need replacing. she also said the new 12 cell battery should work and most likely the 6 cell battery would work with a new hard drive. the want $270 to replace and reformat the hard drive.
how can i tell if the problem is with the battery or the hard drive? i would like to replace the hard drive myself if that is the problem.